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Ah, no the lists don't go into that much detail. They are general lists of the base cards in a set, not of every variant. If you have lists of the variants that you'd like to make available I'd be more than happy to add links to them above!
Depends on if you mean different versions of the same card from different sets, or if you mean like Phase 1 versus Phase 2 versions of TEC cards, etc.The links above are simply lists of the cards from each set.
The links to the I/J starters and the sets under that appear to be faulty. Probably thanks to the website shift that happened not long ago.